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249981 (2001 VR101)
Classification: Main-belt Asteroid          SPK-ID: 2249981
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09100939194862492 3.7043e-08  
a 2.779473780306648 2.0551e-08 au
q 2.526515561623794 1.0728e-07 au
i 4.077559388928695 4.5625e-06 deg
node 280.8871207133134 6.1236e-05 deg
peri 97.84849390834246 6.929e-05 deg
M 28.2156701606033 2.9807e-05 deg
tp 2458867.843001034093
(2020-Jan-19.34300103)		 0.00014005 TDB
period 1692.55308684489
4.63		 1.8771e-05
5.139e-08		 d
yr
n .2126964304978348 2.3589e-09 deg/d
Q 3.032431998989503 2.2421e-08 au
   Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      6648 days (18.20 yr)  
   first obs. used      2001-11-12  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58088  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:30  

Additional Information
 Earth MOID = 1.53254 au 
 Jupiter MOID = 2.40844 au 
 T_jup = 3.324 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO454854  
diameter diameter 3.471 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249981 (2001 VR101)          Discovered 2001-Nov-12 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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